Neco Kriel

New study in preprint. In this study we test if supernova-driven turbulence, a large component of the turbulence in our Galaxy, resembles classical Kolmogorov-style turbulence, as it is regularly assumed. It does not. arxiv.org/abs/2501.09855

@PMocz Thanks! Stable streamline integration is a must if you want to advect long distances, but post-processing is what sells it. @astro_magnetism recommended high pass filtering and multiple passes of the LIC, which makes the final result so much better!

@AstroKriel Really cool! Some of the nicest/cleanest LIC plots I've seen

Did you wish for a fast and simple LIC code this Christmas? Well, look no further! I wrote one you can have for free, and a week early! Happy holidays! 🎄🎅 github.com/AstroKriel/lin…

@juandiegosoler I've made a stand-alone repo, that way there are less dependencies involved. Have a look and let me know what you think! github.com/AstroKriel/lin…

@AstroKriel Wow!!! That's fast. I wrote my own archaic version of the thing here. Maybe it can of use (you want to add your to the magnetar package) github.com/solerjuan/magn…

I wrote some code to compute LICs (a way to visualise vector fields), and you know what, I think its working pretty well if you ask me!

@juandiegosoler Great, will do! Gimme a few days :-)

@juandiegosoler Yep, applies a LIC over a domain size of 1000^2 cells, with a kernel length of 150 cells, in under half a second! What's nice, though, is the streamline advection is accurate, so large kernels are stable, and you can apply multiple passes to create higher contrast results

@AstroKriel Wonderful! Is it fast?

"The larger one’s ignorance, the stronger the magnetic fields." – Lodewijk Woltjer I present you with a close-up from one of my simulations, diving into the chaotic world of turbulent plasma in the intracluster medium!

to $\bm{b}$ or not to $\bm{b}$

I wish they'd hurry up already and adapt David J. Griffiths' best seller 'Introduction to Electrodynamics' to the screen!

@astro_sven @abcnews @galahsurvey hehehe! Congrats by the way!

Excited to have spoken with @abcnews about the latest @galahsurvey Data Release 4, where we’ve mapped almost 1 million stars! 🚀✨ Watch the full interview here: abc.net.au/news/2024-10-0…

I wish I invested in the Fourier transform in 1807...

when in doubt, consult the SI units

C++ is the new FORTRAN, Julia is the new IDL, and Python is the new Bash. Change my mind.

@astro_magnetism Classic! Also, congrats!! (ps. Best way to avoid memory errors is just to make every variable global 😉)

@AstroKriel Of course

Found an esoteric C++ bug that haunted my afternoon. Everyone clap.